Question

Dr. Eric B. Sandoval is studying pea color in a new type ofpeaplant. He started by mating a pure breeding white pea with apurebreeding white peas. All the F1 are green. WhenDr. Eric did theself cross the F1 green peas, he got the followingratios:

9 Green
6 White
1 Yellow

Dr. Eric sent off some of the F1 green peas to a friend (Dr.KayleeH. Helms) in Florida. When Kaylee does the same F1 selfcross,she got

9 Green
3 White
1 Yellow

1. (M T/F) This is an example of incomplete penetrance.

2. (M T/F) If Dr. Eric takes one of his F2 white peas andselfcrosses it, he can be sure he will not get green peas.

3. (MC) If Dr. Kaylee takes one of her F2 white peas at random,herchances of getting a pure breeding is which of thefollowing
a. all are pure breeding.
b. none are pure breeding.
c. 1 in 3 are pure breeding.
d. 2 in 3 are pure breeding.
e. cannot be determined from data given.

4. (MC) If Dr. Eric takes one of his F2 green peas and mated ittoone of the parental white pea, he would expect:
a. all to be green.
b. to get all yellow.
c. to get no white.
d. none of the above
e. cannot be determined from the datagiven.

5. For Kaylee’s cross, do the F2 branch for thephenotypegroups.